Current File : /var/www/html/maausk/libraries/classes/Navigation/NavigationTree.php
<?php
/**
 * Functionality for the navigation tree
 */

declare(strict_types=1);

namespace PhpMyAdmin\Navigation;

use PhpMyAdmin\CheckUserPrivileges;
use PhpMyAdmin\DatabaseInterface;
use PhpMyAdmin\Html\Generator;
use PhpMyAdmin\Navigation\Nodes\Node;
use PhpMyAdmin\Navigation\Nodes\NodeDatabase;
use PhpMyAdmin\Navigation\Nodes\NodeTable;
use PhpMyAdmin\Navigation\Nodes\NodeTableContainer;
use PhpMyAdmin\Navigation\Nodes\NodeViewContainer;
use PhpMyAdmin\RecentFavoriteTable;
use PhpMyAdmin\ResponseRenderer;
use PhpMyAdmin\Template;
use PhpMyAdmin\Url;
use PhpMyAdmin\Util;

use function __;
use function _ngettext;
use function array_intersect_key;
use function array_key_exists;
use function array_keys;
use function array_merge;
use function array_shift;
use function base64_decode;
use function count;
use function explode;
use function floor;
use function get_class;
use function htmlspecialchars;
use function in_array;
use function is_array;
use function is_bool;
use function is_object;
use function mb_strlen;
use function mb_strpos;
use function mb_substr;
use function sort;
use function sprintf;
use function strcasecmp;
use function strlen;
use function strnatcasecmp;
use function strrpos;
use function strstr;
use function substr;
use function trigger_error;
use function trim;
use function usort;

use const E_USER_WARNING;

/**
 * Displays a collapsible of database objects in the navigation frame
 */
class NavigationTree
{
    private const SPECIAL_NODE_NAMES = ['tables', 'views', 'functions', 'procedures', 'events'];

    /** @var Node Reference to the root node of the tree */
    private $tree;
    /**
     * @var array The actual paths to all expanded nodes in the tree
     *            This does not include nodes created after the grouping
     *            of nodes has been performed
     */
    private $aPath = [];
    /**
     * @var array The virtual paths to all expanded nodes in the tree
     *            This includes nodes created after the grouping of
     *            nodes has been performed
     */
    private $vPath = [];
    /**
     * @var int Position in the list of databases,
     *          used for pagination
     */
    private $pos;
    /**
     * @var string[] The names of the type of items that are being paginated on
     *               the second level of the navigation tree. These may be
     *               tables, views, functions, procedures or events.
     */
    private $pos2Name = [];
    /**
     * @var int[] The positions of nodes in the lists of tables, views,
     *            routines or events used for pagination
     */
    private $pos2Value = [];
    /**
     * @var string[] The names of the type of items that are being paginated
     *               on the second level of the navigation tree.
     *               These may be columns or indexes
     */
    private $pos3Name = [];
    /**
     * @var int[] The positions of nodes in the lists of columns or indexes
     *            used for pagination
     */
    private $pos3Value = [];
    /**
     * @var string The search clause to use in SQL queries for
     *             fetching databases
     *             Used by the asynchronous fast filter
     */
    private $searchClause = '';
    /**
     * @var string The search clause to use in SQL queries for
     *             fetching nodes
     *             Used by the asynchronous fast filter
     */
    private $searchClause2 = '';
    /**
     * @var bool Whether a warning was raised for large item groups
     *           which can affect performance.
     */
    private $largeGroupWarning = false;

    /** @var Template */
    private $template;

    /** @var DatabaseInterface */
    private $dbi;

    /**
     * @param Template          $template Template instance
     * @param DatabaseInterface $dbi      DatabaseInterface instance
     */
    public function __construct($template, DatabaseInterface $dbi)
    {
        $this->template = $template;
        $this->dbi = $dbi;

        $checkUserPrivileges = new CheckUserPrivileges($this->dbi);
        $checkUserPrivileges->getPrivileges();

        // Save the position at which we are in the database list
        if (isset($_POST['pos'])) {
            $this->pos = (int) $_POST['pos'];
        } elseif (isset($_GET['pos'])) {
            $this->pos = (int) $_GET['pos'];
        }

        if (! isset($this->pos)) {
            $this->pos = $this->getNavigationDbPos();
        }

        // Get the active node
        if (isset($_POST['aPath'])) {
            $this->aPath[0] = $this->parsePath($_POST['aPath']);
            $this->pos2Name[0] = $_POST['pos2_name'] ?? '';
            $this->pos2Value[0] = (int) ($_POST['pos2_value'] ?? 0);
            if (isset($_POST['pos3_name'])) {
                $this->pos3Name[0] = $_POST['pos3_name'] ?? '';
                $this->pos3Value[0] = (int) $_POST['pos3_value'];
            }
        } else {
            if (isset($_POST['n0_aPath'])) {
                $count = 0;
                while (isset($_POST['n' . $count . '_aPath'])) {
                    $this->aPath[$count] = $this->parsePath($_POST['n' . $count . '_aPath']);
                    if (isset($_POST['n' . $count . '_pos2_name'])) {
                        $this->pos2Name[$count] = $_POST['n' . $count . '_pos2_name'];
                        $this->pos2Value[$count] = (int) $_POST['n' . $count . '_pos2_value'];
                    }

                    if (isset($_POST['n' . $count . '_pos3_name'])) {
                        $this->pos3Name[$count] = $_POST['n' . $count . '_pos3_name'];
                        $this->pos3Value[$count] = (int) $_POST['n' . $count . '_pos3_value'];
                    }

                    $count++;
                }
            }
        }

        if (isset($_POST['vPath'])) {
            $this->vPath[0] = $this->parsePath($_POST['vPath']);
        } else {
            if (isset($_POST['n0_vPath'])) {
                $count = 0;
                while (isset($_POST['n' . $count . '_vPath'])) {
                    $this->vPath[$count] = $this->parsePath($_POST['n' . $count . '_vPath']);
                    $count++;
                }
            }
        }

        if (isset($_POST['searchClause'])) {
            $this->searchClause = $_POST['searchClause'];
        }

        if (isset($_POST['searchClause2'])) {
            $this->searchClause2 = $_POST['searchClause2'];
        }

        // Initialize the tree by creating a root node
        $node = NodeFactory::getInstance('NodeDatabaseContainer', 'root');
        $this->tree = $node;
        if (! $GLOBALS['cfg']['NavigationTreeEnableGrouping'] || ! $GLOBALS['cfg']['ShowDatabasesNavigationAsTree']) {
            return;
        }

        $this->tree->separator = $GLOBALS['cfg']['NavigationTreeDbSeparator'];
        $this->tree->separatorDepth = 10000;
    }

    /**
     * Returns the database position for the page selector
     */
    private function getNavigationDbPos(): int
    {
        $retval = 0;

        if (strlen($GLOBALS['db'] ?? '') === 0) {
            return $retval;
        }

        /*
         * @todo describe a scenario where this code is executed
         */
        if (! $GLOBALS['cfg']['Server']['DisableIS']) {
            $dbSeparator = $this->dbi->escapeString($GLOBALS['cfg']['NavigationTreeDbSeparator']);
            $query = 'SELECT (COUNT(DB_first_level) DIV %d) * %d ';
            $query .= 'from ( ';
            $query .= ' SELECT distinct SUBSTRING_INDEX(SCHEMA_NAME, ';
            $query .= " '%s', 1) ";
            $query .= ' DB_first_level ';
            $query .= ' FROM INFORMATION_SCHEMA.SCHEMATA ';
            $query .= " WHERE `SCHEMA_NAME` < '%s' ";
            $query .= ') t ';

            return (int) $this->dbi->fetchValue(
                sprintf(
                    $query,
                    (int) $GLOBALS['cfg']['FirstLevelNavigationItems'],
                    (int) $GLOBALS['cfg']['FirstLevelNavigationItems'],
                    $dbSeparator,
                    $this->dbi->escapeString($GLOBALS['db'])
                )
            );
        }

        $prefixMap = [];
        if ($GLOBALS['dbs_to_test'] === false) {
            $handle = $this->dbi->tryQuery('SHOW DATABASES');
            if ($handle !== false) {
                while ($database = $handle->fetchValue()) {
                    if (strcasecmp($database, $GLOBALS['db']) >= 0) {
                        break;
                    }

                    $prefix = strstr($database, $GLOBALS['cfg']['NavigationTreeDbSeparator'], true);
                    if ($prefix === false) {
                        $prefix = $database;
                    }

                    $prefixMap[$prefix] = 1;
                }
            }
        } else {
            $databases = [];
            foreach ($GLOBALS['dbs_to_test'] as $db) {
                $query = "SHOW DATABASES LIKE '" . $db . "'";
                $handle = $this->dbi->tryQuery($query);
                if ($handle === false) {
                    continue;
                }

                $databases = array_merge($databases, $handle->fetchAllColumn());
            }

            sort($databases);
            foreach ($databases as $database) {
                if (strcasecmp($database, $GLOBALS['db']) >= 0) {
                    break;
                }

                $prefix = strstr($database, $GLOBALS['cfg']['NavigationTreeDbSeparator'], true);
                if ($prefix === false) {
                    $prefix = $database;
                }

                $prefixMap[$prefix] = 1;
            }
        }

        $navItems = (int) $GLOBALS['cfg']['FirstLevelNavigationItems'];

        return (int) floor(count($prefixMap) / $navItems) * $navItems;
    }

    /**
     * Converts an encoded path to a node in string format to an array
     *
     * @param string $string The path to parse
     *
     * @return array
     */
    private function parsePath($string): array
    {
        $path = explode('.', $string);
        foreach ($path as $key => $value) {
            $path[$key] = base64_decode($value);
        }

        return $path;
    }

    /**
     * Generates the tree structure so that it can be rendered later
     *
     * @return Node|bool The active node or false in case of failure, or true: (@see buildPathPart())
     */
    private function buildPath()
    {
        $retval = $this->tree;

        // Add all databases unconditionally
        $data = $this->tree->getData('databases', $this->pos, $this->searchClause);
        $hiddenCounts = $this->tree->getNavigationHidingData();
        foreach ($data as $db) {
            /** @var NodeDatabase $node */
            $node = NodeFactory::getInstance('NodeDatabase', $db);
            if (isset($hiddenCounts[$db])) {
                $node->setHiddenCount($hiddenCounts[$db]);
            }

            $this->tree->addChild($node);
        }

        // Whether build other parts of the tree depends
        // on whether we have any paths in $this->aPath
        foreach ($this->aPath as $key => $path) {
            $retval = $this->buildPathPart(
                $path,
                $this->pos2Name[$key] ?? '',
                $this->pos2Value[$key] ?? 0,
                $this->pos3Name[$key] ?? '',
                $this->pos3Value[$key] ?? 0
            );
        }

        return $retval;
    }

    /**
     * Builds a branch of the tree
     *
     * @param array  $path  A paths pointing to the branch
     *                      of the tree that needs to be built
     * @param string $type2 The type of item being paginated on
     *                      the second level of the tree
     * @param int    $pos2  The position for the pagination of
     *                      the branch at the second level of the tree
     * @param string $type3 The type of item being paginated on
     *                      the third level of the tree
     * @param int    $pos3  The position for the pagination of
     *                      the branch at the third level of the tree
     *
     * @return Node|bool    The active node or false in case of failure, true if the path contains <= 1 items
     */
    private function buildPathPart(array $path, string $type2, int $pos2, string $type3, int $pos3)
    {
        if (count($path) <= 1) {
            return true;
        }

        array_shift($path); // remove 'root'
        /** @var NodeDatabase|null $db */
        $db = $this->tree->getChild($path[0]);

        if ($db === null) {
            return false;
        }

        $retval = $db;

        $containers = $this->addDbContainers($db, $type2, $pos2);

        array_shift($path); // remove db

        if ((count($path) <= 0 || ! array_key_exists($path[0], $containers)) && count($containers) != 1) {
            return $retval;
        }

        if (count($containers) === 1) {
            $container = array_shift($containers);
        } else {
            $container = $db->getChild($path[0], true);
            if ($container === null) {
                return false;
            }
        }

        $retval = $container;

        if (count($container->children) <= 1) {
            $dbData = $db->getData($container->realName, $pos2, $this->searchClause2);
            foreach ($dbData as $item) {
                switch ($container->realName) {
                    case 'events':
                        $node = NodeFactory::getInstance('NodeEvent', $item);
                        break;
                    case 'functions':
                        $node = NodeFactory::getInstance('NodeFunction', $item);
                        break;
                    case 'procedures':
                        $node = NodeFactory::getInstance('NodeProcedure', $item);
                        break;
                    case 'tables':
                        $node = NodeFactory::getInstance('NodeTable', $item);
                        break;
                    case 'views':
                        $node = NodeFactory::getInstance('NodeView', $item);
                        break;
                    default:
                        break;
                }

                if (! isset($node)) {
                    continue;
                }

                if ($type2 == $container->realName) {
                    $node->pos2 = $pos2;
                }

                $container->addChild($node);
            }
        }

        if (count($path) > 1 && $path[0] !== 'tables') {
            return false;
        }

        array_shift($path); // remove container
        if (count($path) <= 0) {
            return $retval;
        }

        /** @var NodeTable|null $table */
        $table = $container->getChild($path[0], true);
        if ($table === null) {
            if (! $db->getPresence('tables', $path[0])) {
                return false;
            }

            $node = NodeFactory::getInstance('NodeTable', $path[0]);
            if ($type2 == $container->realName) {
                $node->pos2 = $pos2;
            }

            $container->addChild($node);
            $table = $container->getChild($path[0], true);
        }

        $retval = $table ?? false;
        $containers = $this->addTableContainers($table, $pos2, $type3, $pos3);
        array_shift($path); // remove table
        if (count($path) <= 0 || ! array_key_exists($path[0], $containers)) {
            return $retval;
        }

        $container = $table->getChild($path[0], true);
        $retval = $container ?? false;
        $tableData = $table->getData($container->realName, $pos3);
        foreach ($tableData as $item) {
            switch ($container->realName) {
                case 'indexes':
                    $node = NodeFactory::getInstance('NodeIndex', $item);
                    break;
                case 'columns':
                    $node = NodeFactory::getInstance('NodeColumn', $item);
                    break;
                case 'triggers':
                    $node = NodeFactory::getInstance('NodeTrigger', $item);
                    break;
                default:
                    break;
            }

            if (! isset($node)) {
                continue;
            }

            $node->pos2 = $container->parent->pos2;
            if ($type3 == $container->realName) {
                $node->pos3 = $pos3;
            }

            $container->addChild($node);
        }

        return $retval;
    }

    /**
     * Adds containers to a node that is a table
     *
     * References to existing children are returned
     * if this function is called twice on the same node
     *
     * @param NodeTable $table The table node, new containers will be
     *                         attached to this node
     * @param int       $pos2  The position for the pagination of
     *                         the branch at the second level of the tree
     * @param string    $type3 The type of item being paginated on
     *                         the third level of the tree
     * @param int       $pos3  The position for the pagination of
     *                         the branch at the third level of the tree
     *
     * @return array An array of new nodes
     */
    private function addTableContainers(NodeTable $table, int $pos2, string $type3, int $pos3): array
    {
        $retval = [];
        if ($table->hasChildren(true) == 0) {
            if ($table->getPresence('columns')) {
                $retval['columns'] = NodeFactory::getInstance('NodeColumnContainer');
            }

            if ($table->getPresence('indexes')) {
                $retval['indexes'] = NodeFactory::getInstance('NodeIndexContainer');
            }

            if ($table->getPresence('triggers')) {
                $retval['triggers'] = NodeFactory::getInstance('NodeTriggerContainer');
            }

            // Add all new Nodes to the tree
            foreach ($retval as $node) {
                $node->pos2 = $pos2;
                if ($type3 == $node->realName) {
                    $node->pos3 = $pos3;
                }

                $table->addChild($node);
            }
        } else {
            foreach ($table->children as $node) {
                if ($type3 == $node->realName) {
                    $node->pos3 = $pos3;
                }

                $retval[$node->realName] = $node;
            }
        }

        return $retval;
    }

    /**
     * Adds containers to a node that is a database
     *
     * References to existing children are returned
     * if this function is called twice on the same node
     *
     * @param NodeDatabase $db   The database node, new containers will be
     *                           attached to this node
     * @param string       $type The type of item being paginated on
     *                           the second level of the tree
     * @param int          $pos2 The position for the pagination of
     *                           the branch at the second level of the tree
     *
     * @return array An array of new nodes
     */
    private function addDbContainers(NodeDatabase $db, string $type, int $pos2): array
    {
        // Get items to hide
        $hidden = $db->getHiddenItems('group');
        if (! $GLOBALS['cfg']['NavigationTreeShowTables'] && ! in_array('tables', $hidden)) {
            $hidden[] = 'tables';
        }

        if (! $GLOBALS['cfg']['NavigationTreeShowViews'] && ! in_array('views', $hidden)) {
            $hidden[] = 'views';
        }

        if (! $GLOBALS['cfg']['NavigationTreeShowFunctions'] && ! in_array('functions', $hidden)) {
            $hidden[] = 'functions';
        }

        if (! $GLOBALS['cfg']['NavigationTreeShowProcedures'] && ! in_array('procedures', $hidden)) {
            $hidden[] = 'procedures';
        }

        if (! $GLOBALS['cfg']['NavigationTreeShowEvents'] && ! in_array('events', $hidden)) {
            $hidden[] = 'events';
        }

        $retval = [];
        if ($db->hasChildren(true) == 0) {
            if (! in_array('tables', $hidden) && $db->getPresence('tables')) {
                $retval['tables'] = NodeFactory::getInstance('NodeTableContainer');
            }

            if (! in_array('views', $hidden) && $db->getPresence('views')) {
                $retval['views'] = NodeFactory::getInstance('NodeViewContainer');
            }

            if (! in_array('functions', $hidden) && $db->getPresence('functions')) {
                $retval['functions'] = NodeFactory::getInstance('NodeFunctionContainer');
            }

            if (! in_array('procedures', $hidden) && $db->getPresence('procedures')) {
                $retval['procedures'] = NodeFactory::getInstance('NodeProcedureContainer');
            }

            if (! in_array('events', $hidden) && $db->getPresence('events')) {
                $retval['events'] = NodeFactory::getInstance('NodeEventContainer');
            }

            // Add all new Nodes to the tree
            foreach ($retval as $node) {
                if ($type == $node->realName) {
                    $node->pos2 = $pos2;
                }

                $db->addChild($node);
            }
        } else {
            foreach ($db->children as $node) {
                if ($type == $node->realName) {
                    $node->pos2 = $pos2;
                }

                $retval[$node->realName] = $node;
            }
        }

        return $retval;
    }

    /**
     * Recursively groups tree nodes given a separator
     *
     * @param Node $node The node to group or null
     *                   to group the whole tree. If
     *                   passed as an argument, $node
     *                   must be of type CONTAINER
     */
    public function groupTree(?Node $node = null): void
    {
        if ($node === null) {
            $node = $this->tree;
        }

        $this->groupNode($node);
        foreach ($node->children as $child) {
            $this->groupTree($child);
        }
    }

    /**
     * Recursively groups tree nodes given a separator
     *
     * @param Node $node The node to group
     */
    public function groupNode($node): void
    {
        if ($node->type != Node::CONTAINER || ! $GLOBALS['cfg']['NavigationTreeEnableExpansion']) {
            return;
        }

        $separators = [];
        if (is_array($node->separator)) {
            $separators = $node->separator;
        } else {
            if (strlen($node->separator)) {
                $separators[] = $node->separator;
            }
        }

        $prefixes = [];
        if ($node->separatorDepth > 0) {
            foreach ($node->children as $child) {
                $prefixPos = false;
                foreach ($separators as $separator) {
                    $sepPos = mb_strpos((string) $child->name, $separator);
                    if (
                        $sepPos == false
                        || $sepPos == mb_strlen($child->name)
                        || $sepPos == 0
                        || ($prefixPos !== false && $sepPos >= $prefixPos)
                    ) {
                        continue;
                    }

                    $prefixPos = $sepPos;
                }

                if ($prefixPos !== false) {
                    $prefix = mb_substr($child->name, 0, $prefixPos);
                    if (! isset($prefixes[$prefix])) {
                        $prefixes[$prefix] = 1;
                    } else {
                        $prefixes[$prefix]++;
                    }
                }

                //Bug #4375: Check if prefix is the name of a DB, to create a group.
                foreach ($node->children as $otherChild) {
                    if (! array_key_exists($otherChild->name, $prefixes)) {
                        continue;
                    }

                    $prefixes[$otherChild->name]++;
                }
            }

            //Check if prefix is the name of a DB, to create a group.
            foreach ($node->children as $child) {
                if (! array_key_exists($child->name, $prefixes)) {
                    continue;
                }

                $prefixes[$child->name]++;
            }
        }

        // It is not a group if it has only one item
        foreach ($prefixes as $key => $value) {
            if ($value > 1) {
                continue;
            }

            unset($prefixes[$key]);
        }

        $numChildren = count($node->children);

        // rfe #1634 Don't group if there's only one group and no other items
        if (count($prefixes) === 1) {
            $keys = array_keys($prefixes);
            $key = $keys[0];
            if ($prefixes[$key] == $numChildren - 1) {
                unset($prefixes[$key]);
            }
        }

        if (! count($prefixes)) {
            return;
        }

        /** @var Node[] $groups */
        $groups = [];
        foreach ($prefixes as $key => $value) {
            // warn about large groups
            if ($value > 500 && ! $this->largeGroupWarning) {
                trigger_error(
                    __(
                        'There are large item groups in navigation panel which '
                        . 'may affect the performance. Consider disabling item '
                        . 'grouping in the navigation panel.'
                    ),
                    E_USER_WARNING
                );
                $this->largeGroupWarning = true;
            }

            $newChildren = [];
            foreach ($separators as $separator) {
                $separatorLength = strlen($separator);
                // FIXME: this could be more efficient
                foreach ($node->children as $child) {
                    $keySeparatorLength = mb_strlen((string) $key) + $separatorLength;
                    $nameSubstring = mb_substr((string) $child->name, 0, $keySeparatorLength);
                    if (($nameSubstring != $key . $separator && $child->name != $key) || $child->type != Node::OBJECT) {
                        continue;
                    }

                    $class = get_class($child);
                    $className = substr($class, strrpos($class, '\\') + 1);
                    unset($class);
                    /** @var NodeDatabase $newChild */
                    $newChild = NodeFactory::getInstance(
                        $className,
                        mb_substr(
                            $child->name,
                            $keySeparatorLength
                        )
                    );
                    if ($child instanceof NodeDatabase && $child->getHiddenCount() > 0) {
                        $newChild->setHiddenCount($child->getHiddenCount());
                    }

                    $newChild->realName = $child->realName;
                    $newChild->icon = $child->icon;
                    $newChild->links = $child->links;
                    $newChild->pos2 = $child->pos2;
                    $newChild->pos3 = $child->pos3;
                    foreach ($child->children as $elm) {
                        $newChild->addChild($elm);
                    }

                    $newChildren[] = [
                        'node' => $newChild,
                        'replaces_name' => $child->name,
                    ];
                }
            }

            if (count($newChildren) === 0) {
                continue;
            }

            // If the current node is a standard group (not NodeTableContainer, etc.)
            // and the new group contains all of the current node's children, combine them
            $class = get_class($node);
            if (count($newChildren) === $numChildren && substr($class, strrpos($class, '\\') + 1) === 'Node') {
                $node->name .= $separators[0] . htmlspecialchars((string) $key);
                $node->realName .= $separators[0] . htmlspecialchars((string) $key);
                $node->separatorDepth--;
                foreach ($newChildren as $newChild) {
                    $node->removeChild($newChild['replaces_name']);
                    $node->addChild($newChild['node']);
                }
            } else {
                $groups[$key] = new Node(
                    htmlspecialchars((string) $key),
                    Node::CONTAINER,
                    true
                );
                $groups[$key]->separator = $node->separator;
                $groups[$key]->separatorDepth = $node->separatorDepth - 1;
                $groups[$key]->icon = ['image' => 'b_group', 'title' => __('Groups')];
                $groups[$key]->pos2 = $node->pos2;
                $groups[$key]->pos3 = $node->pos3;
                if ($node instanceof NodeTableContainer || $node instanceof NodeViewContainer) {
                    $groups[$key]->links = [
                        'text' => [
                            'route' => $node->links['text']['route'],
                            'params' => array_merge($node->links['text']['params'], ['tbl_group' => $key]),
                        ],
                        'icon' => [
                            'route' => $node->links['icon']['route'],
                            'params' => array_merge($node->links['icon']['params'], ['tbl_group' => $key]),
                        ],
                    ];
                }

                foreach ($newChildren as $newChild) {
                    $node->removeChild($newChild['replaces_name']);
                    $groups[$key]->addChild($newChild['node']);
                }
            }
        }

        foreach ($groups as $group) {
            if (count($group->children) === 0) {
                continue;
            }

            $node->addChild($group);
            $this->groupNode($group);
            $group->classes = 'navGroup';
        }
    }

    /**
     * Renders a state of the tree, used in light mode when
     * either JavaScript and/or Ajax are disabled
     *
     * @return string HTML code for the navigation tree
     */
    public function renderState(): string
    {
        $this->buildPath();

        $quickWarp = $this->quickWarp();
        $fastFilter = $this->fastFilterHtml($this->tree);
        $controls = '';
        if ($GLOBALS['cfg']['NavigationTreeEnableExpansion']) {
            $controls = $this->controls();
        }

        $pageSelector = $this->getPageSelector($this->tree);

        $this->groupTree();
        $children = $this->tree->children;
        usort($children, [
            self::class,
            'sortNode',
        ]);
        $this->setVisibility();

        $nodes = $this->renderNodes($children);

        return $this->template->render('navigation/tree/state', [
            'quick_warp' => $quickWarp,
            'fast_filter' => $fastFilter,
            'controls' => $controls,
            'page_selector' => $pageSelector,
            'nodes' => $nodes,
        ]);
    }

    /**
     * Renders a part of the tree, used for Ajax requests in light mode
     *
     * @return string|false HTML code for the navigation tree
     */
    public function renderPath()
    {
        $node = $this->buildPath();
        if (! is_bool($node)) {
            $this->groupTree();

            $listContent = $this->fastFilterHtml($node);
            $listContent .= $this->getPageSelector($node);
            $children = $node->children;
            usort($children, [
                self::class,
                'sortNode',
            ]);

            $listContent .= $this->renderNodes($children, false);

            if (! $GLOBALS['cfg']['ShowDatabasesNavigationAsTree']) {
                $parents = $node->parents(true);
                $parentName = $parents[0]->realName;
            }
        }

        $hasSearchClause = ! empty($this->searchClause) || ! empty($this->searchClause2);
        if ($hasSearchClause && ! is_bool($node)) {
            $results = 0;
            if (! empty($this->searchClause2)) {
                if (is_object($node->realParent())) {
                    $results = $node->realParent()
                        ->getPresence($node->realName, $this->searchClause2);
                }
            } else {
                $results = $this->tree->getPresence('databases', $this->searchClause);
            }

            $results = sprintf(
                _ngettext(
                    '%s result found',
                    '%s results found',
                    $results
                ),
                $results
            );
            ResponseRenderer::getInstance()
                ->addJSON('results', $results);
        }

        if ($node !== false) {
            return $this->template->render('navigation/tree/path', [
                'has_search_results' => ! empty($this->searchClause) || ! empty($this->searchClause2),
                'list_content' => $listContent ?? '',
                'is_tree' => $GLOBALS['cfg']['ShowDatabasesNavigationAsTree'],
                'parent_name' => $parentName ?? '',
            ]);
        }

        return false;
    }

    /**
     * Renders the parameters that are required on the client
     * side to know which page(s) we will be requesting data from
     *
     * @param Node $node The node to create the pagination parameters for
     *
     * @return array<string, string>
     */
    private function getPaginationParamsHtml(Node $node): array
    {
        $renderDetails = [];
        $paths = $node->getPaths();
        if (isset($paths['aPath_clean'][2])) {
            $renderDetails['position'] = 'pos2_nav';
            $renderDetails['data_name'] = (string) $paths['aPath_clean'][2];
            $renderDetails['data_value'] = (string) $node->pos2;
        }

        if (isset($paths['aPath_clean'][4])) {
            $renderDetails['position'] = 'pos3_nav';
            $renderDetails['data_name'] = (string) $paths['aPath_clean'][4];
            $renderDetails['data_value'] = (string) $node->pos3;
        }

        return $renderDetails;
    }

    /**
     * Finds whether given tree matches this tree.
     *
     * @param array $tree  Tree to check
     * @param array $paths Paths to check
     */
    private function findTreeMatch(array $tree, array $paths): bool
    {
        $match = false;
        foreach ($tree as $path) {
            $match = true;
            foreach ($paths as $key => $part) {
                if (! isset($path[$key]) || $part != $path[$key]) {
                    $match = false;
                    break;
                }
            }

            if ($match) {
                break;
            }
        }

        return $match;
    }

    /**
     * @param Node[] $children
     */
    private function renderNodes(array $children, bool $hasFirstClass = true): string
    {
        $nodes = '';
        for ($i = 0, $nbChildren = count($children); $i < $nbChildren; $i++) {
            if ($i === 0) {
                $nodes .= $this->renderNode($children[0], $hasFirstClass ? 'first' : '');
            } elseif ($i + 1 !== $nbChildren) {
                $nodes .= $this->renderNode($children[$i]);
            } else {
                $nodes .= $this->renderNode($children[$i], 'last');
            }
        }

        return $nodes;
    }

    /**
     * Renders a single node or a branch of the tree
     *
     * @param Node   $node  The node to render
     * @param string $class An additional class for the list item
     *
     * @return string HTML code for the tree node or branch
     */
    private function renderNode(Node $node, string $class = ''): string
    {
        $controlButtons = '';
        $paths = $node->getPaths();
        $nodeIsContainer = $node->type === Node::CONTAINER;
        $liClasses = '';

        // Whether to show the node in the tree (true for all nodes but root)
        // If false, the node's children will still be shown, but as children of the node's parent
        $showNode = $node->hasSiblings() || count($node->parents(false, true)) > 0;

        // Don't show the 'Tables' node under each database unless it has 'Views', etc. as a sibling
        if ($node instanceof NodeTableContainer && ! $node->hasSiblings()) {
            $showNode = false;
        }

        if ($showNode) {
            $response = ResponseRenderer::getInstance();
            if ($nodeIsContainer && count($node->children) === 0 && ! $response->isAjax()) {
                return '';
            }

            $liClasses = trim($class . ' ' . $node->classes);
            $sterile = ['events', 'triggers', 'functions', 'procedures', 'views', 'columns', 'indexes'];
            $parentName = '';
            $parents = $node->parents(false, true);
            if (count($parents)) {
                $parentName = $parents[0]->realName;
            }

            // if node name itself is in sterile, then allow
            $nodeIsGroup = $node->isGroup
                || (! in_array($parentName, $sterile) && ! $node->isNew)
                || (in_array($node->realName, $sterile) && ! empty($node->children));
            if ($nodeIsGroup) {
                $match = $this->findTreeMatch($this->vPath, $paths['vPath_clean']);
                $linkClasses = $node->getCssClasses($match);
                if ($GLOBALS['cfg']['ShowDatabasesNavigationAsTree'] || $parentName !== 'root') {
                    $nodeIcon = $node->getIcon($match);
                }
            }

            $paginationParams = $this->getPaginationParamsHtml($node);

            $haveAjax = [
                'functions',
                'procedures',
                'events',
                'triggers',
                'indexes',
            ];
            $parent = $node->parents(false, true);
            $isNewView = $parent[0]->realName === 'views' && $node->isNew === true;
            $linkHasAjaxClass = $parent[0]->type == Node::CONTAINER
                && (in_array($parent[0]->realName, $haveAjax) || $isNewView);

            if (! $node->isGroup) {
                $args = [];
                $parents = $node->parents(true);
                foreach ($parents as $parent) {
                    if (! isset($parent->urlParamName)) {
                        continue;
                    }

                    $args[$parent->urlParamName] = $parent->realName;
                }

                $iconLinks = [];
                $iconLinks[] = [
                    'route' => $node->links['icon']['route'],
                    'params' => array_merge(
                        $node->links['icon']['params'],
                        array_intersect_key($args, $node->links['icon']['params'])
                    ),
                    'is_ajax' => $linkHasAjaxClass,
                    'image' => $node->icon['image'],
                    'title' => $node->icon['title'],
                ];

                if (isset($node->links['second_icon'], $node->secondIcon)) {
                    $iconLinks[] = [
                        'route' => $node->links['second_icon']['route'],
                        'params' => array_merge(
                            $node->links['second_icon']['params'],
                            array_intersect_key($args, $node->links['second_icon']['params'])
                        ),
                        'is_ajax' => $linkHasAjaxClass,
                        'image' => $node->secondIcon['image'],
                        'title' => $node->secondIcon['title'],
                    ];
                }

                $textLink = [
                    'route' => $node->links['text']['route'],
                    'params' => array_merge(
                        $node->links['text']['params'],
                        array_intersect_key($args, $node->links['text']['params'])
                    ),
                    'is_ajax' => $linkHasAjaxClass,
                    'title' => $node->links['title'] ?? $node->title ?? '',
                ];
            }

            $controlButtons .= $node->getHtmlForControlButtons();
            $wrap = true;
        } else {
            $node->visible = true;
            $wrap = false;
            $paginationParams = $this->getPaginationParamsHtml($node);
        }

        $children = $node->children;
        usort($children, [self::class, 'sortNode']);
        $buffer = '';
        $extraClass = '';
        for ($i = 0, $nbChildren = count($children); $i < $nbChildren; $i++) {
            if ($i + 1 == $nbChildren) {
                $extraClass = ' last';
            }

            $buffer .= $this->renderNode($children[$i], $children[$i]->classes . $extraClass);
        }

        if (! empty($buffer)) {
            $recursiveHtml = $this->fastFilterHtml($node);
            $recursiveHtml .= $this->getPageSelector($node);
            $recursiveHtml .= $buffer;
        }

        return $this->template->render('navigation/tree/node', [
            'node' => $node,
            'class' => $class,
            'show_node' => $showNode,
            'has_siblings' => $node->hasSiblings(),
            'li_classes' => $liClasses,
            'control_buttons' => $controlButtons,
            'node_is_container' => $nodeIsContainer,
            'has_second_icon' => isset($node->secondIcon),
            'recursive' => ['html' => $recursiveHtml ?? '', 'has_wrapper' => $wrap, 'is_hidden' => ! $node->visible],
            'icon_links' => $iconLinks ?? [],
            'text_link' => $textLink ?? [],
            'pagination_params' => $paginationParams,
            'node_is_group' => $nodeIsGroup ?? false,
            'link_classes' => $linkClasses ?? '',
            'paths' => ['a_path' => $paths['aPath'] ?? '', 'v_path' => $paths['vPath'] ?? '', 'pos' => $this->pos],
            'node_icon' => $nodeIcon ?? '',
        ]);
    }

    /**
     * Renders a database select box like the pre-4.0 navigation panel
     *
     * @return string HTML code
     */
    public function renderDbSelect(): string
    {
        $this->buildPath();

        $quickWarp = $this->quickWarp();

        $this->tree->isGroup = false;

        // Provide for pagination in database select
        $listNavigator = Generator::getListNavigator(
            $this->tree->getPresence('databases', ''),
            $this->pos,
            ['server' => $GLOBALS['server']],
            Url::getFromRoute('/navigation'),
            'frame_navigation',
            $GLOBALS['cfg']['FirstLevelNavigationItems'],
            'pos',
            ['dbselector']
        );

        $children = $this->tree->children;
        $selected = $GLOBALS['db'];
        $options = [];
        foreach ($children as $node) {
            if ($node->isNew) {
                continue;
            }

            $paths = $node->getPaths();
            if (! isset($node->links['text'])) {
                continue;
            }

            $title = $node->links['title'] ?? '';
            $options[] = [
                'title' => $title,
                'name' => $node->realName,
                'data' => [
                    'apath' => $paths['aPath'],
                    'vpath' => $paths['vPath'],
                    'pos' => $this->pos,
                ],
                'isSelected' => $node->realName === $selected,
            ];
        }

        $children = $this->tree->children;
        usort($children, [
            self::class,
            'sortNode',
        ]);
        $this->setVisibility();

        $nodes = $this->renderNodes($children);

        $databaseUrl = Util::getScriptNameForOption($GLOBALS['cfg']['DefaultTabDatabase'], 'database');

        return $this->template->render('navigation/tree/database_select', [
            'quick_warp' => $quickWarp,
            'list_navigator' => $listNavigator,
            'server' => $GLOBALS['server'],
            'options' => $options,
            'nodes' => $nodes,
            'database_url' => $databaseUrl,
        ]);
    }

    /**
     * Makes some nodes visible based on the which node is active
     */
    private function setVisibility(): void
    {
        foreach ($this->vPath as $path) {
            $node = $this->tree;
            foreach ($path as $value) {
                $child = $node->getChild($value);
                if ($child === null) {
                    continue;
                }

                $child->visible = true;
                $node = $child;
            }
        }
    }

    /**
     * Generates the HTML code for displaying the fast filter for tables
     *
     * @param Node $node The node for which to generate the fast filter html
     *
     * @return string LI element used for the fast filter
     */
    private function fastFilterHtml(Node $node): string
    {
        $filterDbMin = (int) $GLOBALS['cfg']['NavigationTreeDisplayDbFilterMinimum'];
        $filterItemMin = (int) $GLOBALS['cfg']['NavigationTreeDisplayItemFilterMinimum'];
        $urlParams = [];

        $isRootNode = $node === $this->tree && $this->tree->getPresence() >= $filterDbMin;
        if ($isRootNode) {
            $urlParams = ['pos' => 0];
        } else {
            $nodeIsContainer = $node->type === Node::CONTAINER;

            $nodeIsSpecial = in_array($node->realName, self::SPECIAL_NODE_NAMES, true);

            $realParent = $node->realParent();
            if (
                $nodeIsContainer && $nodeIsSpecial
                && $realParent instanceof Node
                && $realParent->getPresence($node->realName) >= $filterItemMin
            ) {
                $paths = $node->getPaths();
                $urlParams = [
                    'pos' => $this->pos,
                    'aPath' => $paths['aPath'],
                    'vPath' => $paths['vPath'],
                    'pos2_name' => $node->realName,
                    'pos2_value' => 0,
                ];
            }
        }

        return $this->template->render('navigation/tree/fast_filter', [
            'url_params' => $urlParams,
            'is_root_node' => $isRootNode,
        ]);
    }

    /**
     * Creates the code for displaying the controls
     * at the top of the navigation tree
     *
     * @return string HTML code for the controls
     */
    private function controls(): string
    {
        // always iconic
        $showIcon = true;
        $showText = false;

        $collapseAll = Generator::getNavigationLink(
            '#',
            $showText,
            __('Collapse all'),
            $showIcon,
            's_collapseall',
            'pma_navigation_collapse'
        );
        $syncImage = 's_unlink';
        $title = __('Link with main panel');
        if ($GLOBALS['cfg']['NavigationLinkWithMainPanel']) {
            $syncImage = 's_link';
            $title = __('Unlink from main panel');
        }

        $unlink = Generator::getNavigationLink('#', $showText, $title, $showIcon, $syncImage, 'pma_navigation_sync');

        return $this->template->render('navigation/tree/controls', [
            'collapse_all' => $collapseAll,
            'unlink' => $unlink,
        ]);
    }

    /**
     * Generates the HTML code for displaying the list pagination
     *
     * @param Node $node The node for whose children the page
     *                   selector will be created
     */
    private function getPageSelector(Node $node): string
    {
        $retval = '';
        if ($node === $this->tree) {
            $retval .= Generator::getListNavigator(
                $this->tree->getPresence('databases', $this->searchClause),
                $this->pos,
                ['server' => $GLOBALS['server']],
                Url::getFromRoute('/navigation'),
                'frame_navigation',
                $GLOBALS['cfg']['FirstLevelNavigationItems'],
                'pos',
                ['dbselector']
            );
        } else {
            if ($node->type == Node::CONTAINER && ! $node->isGroup) {
                $paths = $node->getPaths();

                $level = isset($paths['aPath_clean'][4]) ? 3 : 2;
                $urlParams = [
                    'aPath' => $paths['aPath'],
                    'vPath' => $paths['vPath'],
                    'pos' => $this->pos,
                    'server' => $GLOBALS['server'],
                    'pos2_name' => $paths['aPath_clean'][2],
                ];
                if ($level == 3) {
                    $pos = $node->pos3;
                    $urlParams['pos2_value'] = $node->pos2;
                    $urlParams['pos3_name'] = $paths['aPath_clean'][4];
                } else {
                    $pos = $node->pos2;
                }

                /** @var Node $realParent */
                $realParent = $node->realParent();
                $num = $realParent->getPresence($node->realName, $this->searchClause2);
                $retval .= Generator::getListNavigator(
                    $num,
                    $pos,
                    $urlParams,
                    Url::getFromRoute('/navigation'),
                    'frame_navigation',
                    $GLOBALS['cfg']['MaxNavigationItems'],
                    'pos' . $level . '_value'
                );
            }
        }

        return $retval;
    }

    /**
     * Called by usort() for sorting the nodes in a container
     *
     * @param Node $a The first element used in the comparison
     * @param Node $b The second element used in the comparison
     *
     * @return int See strnatcmp() and strcmp()
     */
    public static function sortNode(Node $a, Node $b): int
    {
        if ($a->isNew) {
            return -1;
        }

        if ($b->isNew) {
            return 1;
        }

        if ($GLOBALS['cfg']['NaturalOrder']) {
            return strnatcasecmp($a->name, $b->name);
        }

        return strcasecmp($a->name, $b->name);
    }

    /**
     * Display quick warp links, contain Recents and Favorites
     *
     * @return string HTML code
     */
    private function quickWarp(): string
    {
        $renderDetails = [];
        if ($GLOBALS['cfg']['NumRecentTables'] > 0) {
            $renderDetails['recent'] = RecentFavoriteTable::getInstance('recent')->getHtml();
        }

        if ($GLOBALS['cfg']['NumFavoriteTables'] > 0) {
            $renderDetails['favorite'] = RecentFavoriteTable::getInstance('favorite')->getHtml();
        }

        return $this->template->render('navigation/tree/quick_warp', $renderDetails);
    }
}
¿Qué es la limpieza dental de perros? - Clínica veterinaria


Es la eliminación del sarro y la placa adherida a la superficie de los dientes mediante un equipo de ultrasonidos que garantiza la integridad de las piezas dentales a la vez que elimina en profundidad cualquier resto de suciedad.

A continuación se procede al pulido de los dientes mediante una fresa especial que elimina la placa bacteriana y devuelve a los dientes el aspecto sano que deben tener.

Una vez terminado todo el proceso, se mantiene al perro en observación hasta que se despierta de la anestesia, bajo la atenta supervisión de un veterinario.

¿Cada cuánto tiempo tengo que hacerle una limpieza dental a mi perro?

A partir de cierta edad, los perros pueden necesitar una limpieza dental anual o bianual. Depende de cada caso. En líneas generales, puede decirse que los perros de razas pequeñas suelen acumular más sarro y suelen necesitar una atención mayor en cuanto a higiene dental.


Riesgos de una mala higiene


Los riesgos más evidentes de una mala higiene dental en los perros son los siguientes:

  • Cuando la acumulación de sarro no se trata, se puede producir una inflamación y retracción de las encías que puede descalzar el diente y provocar caídas.
  • Mal aliento (halitosis).
  • Sarro perros
  • Puede ir a más
  • Las bacterias de la placa pueden trasladarse a través del torrente circulatorio a órganos vitales como el corazón ocasionando problemas de endocarditis en las válvulas. Las bacterias pueden incluso acantonarse en huesos (La osteomielitis es la infección ósea, tanto cortical como medular) provocando mucho dolor y una artritis séptica).

¿Cómo se forma el sarro?

El sarro es la calcificación de la placa dental. Los restos de alimentos, junto con las bacterias presentes en la boca, van a formar la placa bacteriana o placa dental. Si la placa no se retira, al mezclarse con la saliva y los minerales presentes en ella, reaccionará formando una costra. La placa se calcifica y se forma el sarro.

El sarro, cuando se forma, es de color blanquecino pero a medida que pasa el tiempo se va poniendo amarillo y luego marrón.

Síntomas de una pobre higiene dental
La señal más obvia de una mala salud dental canina es el mal aliento.

Sin embargo, a veces no es tan fácil de detectar
Y hay perros que no se dejan abrir la boca por su dueño. Por ejemplo…

Recientemente nos trajeron a la clínica a un perro que parpadeaba de un ojo y decía su dueño que le picaba un lado de la cara. Tenía molestias y dificultad para comer, lo que había llevado a sus dueños a comprarle comida blanda (que suele ser un poco más cara y llevar más contenido en grasa) durante medio año. Después de una exploración oftalmológica, nos dimos cuenta de que el ojo tenía una úlcera en la córnea probablemente de rascarse . Además, el canto lateral del ojo estaba inflamado. Tenía lo que en humanos llamamos flemón pero como era un perro de pelo largo, no se le notaba a simple vista. Al abrirle la boca nos llamó la atención el ver una muela llena de sarro. Le realizamos una radiografía y encontramos una fístula que llegaba hasta la parte inferior del ojo.

Le tuvimos que extraer la muela. Tras esto, el ojo se curó completamente con unos colirios y una lentilla protectora de úlcera. Afortunadamente, la úlcera no profundizó y no perforó el ojo. Ahora el perro come perfectamente a pesar de haber perdido una muela.

¿Cómo mantener la higiene dental de tu perro?
Hay varias maneras de prevenir problemas derivados de la salud dental de tu perro.

Limpiezas de dientes en casa
Es recomendable limpiar los dientes de tu perro semanal o diariamente si se puede. Existe una gran variedad de productos que se pueden utilizar:

Pastas de dientes.
Cepillos de dientes o dedales para el dedo índice, que hacen más fácil la limpieza.
Colutorios para echar en agua de bebida o directamente sobre el diente en líquido o en spray.

En la Clínica Tus Veterinarios enseñamos a nuestros clientes a tomar el hábito de limpiar los dientes de sus perros desde que son cachorros. Esto responde a nuestro compromiso con la prevención de enfermedades caninas.

Hoy en día tenemos muchos clientes que limpian los dientes todos los días a su mascota, y como resultado, se ahorran el dinero de hacer limpiezas dentales profesionales y consiguen una mejor salud de su perro.


Limpiezas dentales profesionales de perros y gatos

Recomendamos hacer una limpieza dental especializada anualmente. La realizamos con un aparato de ultrasonidos que utiliza agua para quitar el sarro. Después, procedemos a pulir los dientes con un cepillo de alta velocidad y una pasta especial. Hacemos esto para proteger el esmalte.

La frecuencia de limpiezas dentales necesaria varía mucho entre razas. En general, las razas grandes tienen buena calidad de esmalte, por lo que no necesitan hacerlo tan a menudo e incluso pueden pasarse la vida sin requerir una limpieza. Sin embargo, razas pequeñas como el Yorkshire o el Maltés, deben hacérselas todos los años desde cachorros si se quiere conservar sus piezas dentales.

Otro factor fundamental es la calidad del pienso. Algunas marcas han diseñado croquetas que limpian la superficie del diente y de la muela al masticarse.

Ultrasonido para perros

¿Se necesita anestesia para las limpiezas dentales de perros y gatos?

La limpieza dental en perros no es una técnica que pueda practicarse sin anestesia general , aunque hay veces que los propietarios no quieren anestesiar y si tiene poco sarro y el perro es muy bueno se puede intentar…… , pero no se va a poder pulir ni acceder a todas la zona de la boca …. Además los limpiadores dentales van a irrigar agua y hay riesgo de aspiración a vías respiratorias si no se realiza una anestesia correcta con intubación traqueal . En resumen , sin anestesia no se va hacer una correcta limpieza dental.

Tampoco sirve la sedación ya que necesitamos que el animal esté totalmente quieto, y el veterinario tenga un acceso completo a todas sus piezas dentales y encías.

Alimentos para la limpieza dental

Hay que tener cierto cuidado a la hora de comprar determinados alimentos porque no todos son saludables. Algunos tienen demasiado contenido graso, que en exceso puede causar problemas cardiovasculares y obesidad.

Los mejores alimentos para los dientes son aquellos que están elaborados por empresas farmacéuticas y llevan componentes químicos con tratamientos específicos para el diente del perro. Esto implica no solo limpieza a través de la acción mecánica de morder sino también un tratamiento antibacteriano para prevenir el sarro.

Conclusión

Si eres como la mayoría de dueños, por falta de tiempo , es probable que no estés prestando la suficiente atención a la limpieza dental de tu perro. Por eso te animamos a que comiences a limpiar los dientes de tu perro y consideres atender a su higiene bucal con frecuencia.

Estas simples medidas pueden conllevar a que tu perro tenga una vida más larga y mucho más saludable.

Si te resulta imposible introducir un cepillo de dientes a tu perro en la boca, pásate con él por clínica Tus Veterinarios y te explicamos cómo hacerlo.

Necesitas hacer una limpieza dental profesional a tu mascota?
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